Box the CLI command futures to reduce the size of the try_main future

Author: sandhose

crates/cli/src/commands/mod.rs

@@ -69,16 +69,18 @@ pub struct Options {
 impl Options {
     pub async fn run(self, figment: &Figment) -> anyhow::Result<()> {
         use Subcommand as S;
+        // We Box the futures for each subcommand so that we avoid this function being
+        // big on the stack all the time
         match self.subcommand {
-            Some(S::Config(c)) => c.run(figment).await,
-            Some(S::Database(c)) => c.run(figment).await,
-            Some(S::Server(c)) => c.run(figment).await,
-            Some(S::Worker(c)) => c.run(figment).await,
-            Some(S::Manage(c)) => c.run(figment).await,
-            Some(S::Templates(c)) => c.run(figment).await,
-            Some(S::Debug(c)) => c.run(figment).await,
-            Some(S::Doctor(c)) => c.run(figment).await,
-            None => self::server::Options::default().run(figment).await,
+            Some(S::Config(c)) => Box::pin(c.run(figment)).await,
+            Some(S::Database(c)) => Box::pin(c.run(figment)).await,
+            Some(S::Server(c)) => Box::pin(c.run(figment)).await,
+            Some(S::Worker(c)) => Box::pin(c.run(figment)).await,
+            Some(S::Manage(c)) => Box::pin(c.run(figment)).await,
+            Some(S::Templates(c)) => Box::pin(c.run(figment)).await,
+            Some(S::Debug(c)) => Box::pin(c.run(figment)).await,
+            Some(S::Doctor(c)) => Box::pin(c.run(figment)).await,
+            None => Box::pin(self::server::Options::default().run(figment)).await,
         }
     }